Bob ! Lucky you !
I would love to have such a set up. Better yet, some one with your experience, and equipment to do my sanding !
Most first time builders don't have such. I've been building 30+ years, and I still don't have the equipment.
I had a hull once ready for varnish, so I thought. went to a local Auto Body shop, and asked what they would charge to spray said hull. The guy came out and in one look, said It needed more sanding. I said OK. Do it.
He only charged me $50 to sand and spray a 16' canoe. It looked great.
After about 3 years. It looked just like the rest of my canoes.
I quickly learned, that if you use and abuse your hulls the way I do ! Save your money and do it yourself.